Is changing the value of the predefined macro `__STDCPP_DEFAULT_NEW_ALIGNMENT__` considered an ABI break? (in the same way that modifying `alignof(std::max_align_t)` would be). I would assume that it is, but I saw this comment on a bug report ( https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77691#c33) and I'm unsure if the value of the macro was later changed in a patch, and if so, if that was considered an ABI break.
